Triple
T3424207
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Asakusa |
E72187
|
entity |
| Predicate | servedByLine |
P1293
|
FINISHED |
| Object |
Tsukuba Express (nearby)
Tsukuba Express (nearby) is a high-speed commuter rail line in the Tokyo metropolitan area connecting Akihabara in central Tokyo with Tsukuba in Ibaraki Prefecture.
|
E358003
|
NE FINISHED |
How this triple was built (4 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Tsukuba Express (nearby) | Statement: [Asakusa, servedByLine, Tsukuba Express (nearby)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Tsukuba Express (nearby) Context triple: [Asakusa, servedByLine, Tsukuba Express (nearby)]
-
A.
Tobu Skytree Line
The Tobu Skytree Line is a major private railway line in the Tokyo area operated by Tobu Railway, serving central Tokyo and extending northward toward Saitama and Tochigi, including access to the Tokyo Skytree.
-
B.
Sōbu Line Rapid
The Sōbu Line Rapid is a Japanese railway service operated by JR East that provides fast commuter and intercity connections between central Tokyo and eastern Chiba Prefecture.
-
C.
Tobu Isesaki Line
The Tobu Isesaki Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting central Tokyo with Saitama and Gunma Prefectures.
-
D.
JR Lines at Kanda
JR Lines at Kanda refers to the Japan Railways train services that stop at Kanda Station in Tokyo, a key commuter hub connecting multiple JR lines with the Tokyo Metro network.
-
E.
Kintetsu Nara Line
The Kintetsu Nara Line is a major private railway line in Japan connecting Osaka with the historic city of Nara, serving commuters and tourists across the Kansai region.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Tsukuba Express (nearby) Triple: [Asakusa, servedByLine, Tsukuba Express (nearby)]
Generated description
Tsukuba Express (nearby) is a high-speed commuter rail line in the Tokyo metropolitan area connecting Akihabara in central Tokyo with Tsukuba in Ibaraki Prefecture.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Tsukuba Express (nearby) Target entity description: Tsukuba Express (nearby) is a high-speed commuter rail line in the Tokyo metropolitan area connecting Akihabara in central Tokyo with Tsukuba in Ibaraki Prefecture.
-
A.
Tobu Skytree Line
The Tobu Skytree Line is a major private railway line in the Tokyo area operated by Tobu Railway, serving central Tokyo and extending northward toward Saitama and Tochigi, including access to the Tokyo Skytree.
-
B.
Sōbu Line Rapid
The Sōbu Line Rapid is a Japanese railway service operated by JR East that provides fast commuter and intercity connections between central Tokyo and eastern Chiba Prefecture.
-
C.
Tobu Isesaki Line
The Tobu Isesaki Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting central Tokyo with Saitama and Gunma Prefectures.
-
D.
JR Lines at Kanda
JR Lines at Kanda refers to the Japan Railways train services that stop at Kanda Station in Tokyo, a key commuter hub connecting multiple JR lines with the Tokyo Metro network.
-
E.
Kintetsu Nara Line
The Kintetsu Nara Line is a major private railway line in Japan connecting Osaka with the historic city of Nara, serving commuters and tourists across the Kansai region.
- F. None of above. chosen
Provenance (5 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69ad85ad38e48190b7660c5118a35289 |
completed | March 8, 2026, 2:20 p.m. |
| NER | Named-entity recognition | batch_69adb9533b588190a18a9b6495712ee0 |
completed | March 8, 2026, 6 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b3547468b8819088e7c4cf3b2e2079 |
completed | March 13, 2026, 12:04 a.m. |
| NEDg | Description generation | batch_69b35519b7f08190b1ea7514036c3453 |
completed | March 13, 2026, 12:06 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69b358fba2208190bc66d5f7d0009ba4 |
completed | March 13, 2026, 12:23 a.m. |
Created at: March 8, 2026, 3:15 p.m.